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P. R. GLASS. FOLDINQMACHINE. APPLICATION FILED Nov.1, 191s.

Patented Aug. 12, 1919.

PlilRifEY LR. GLASS, OF BROOKLXNE, MASSLCHSET'JS, ASSlGNOi-R, T0 Il, R. GLASS COMPANY, @F BOSTON, MASSACHUSETTS, A CRPORATION 0F VIASSACHU- SETTS.

FOLDNG-MACHINE.

l93l29533 i Specification of Letters Patent. llltiiiilgegqll Aug; 3 2; iglijllgm application filed novenber 1, wie. serial no. 260,733.

To all whom t may concern: which the present invention is embodied,

Be it lnown that l, liniLnY ll. GLASS, a and citizen oit the United States, residing at lfig. 2 is a perspective of a portion ol' the llrooliline, in the county of Norfolk and machine showing a closed vamp in the proc Stat-e oi' lvlassachusetts, have invented ceross ot' having its throat folded.

tain improvements in FoldingMachines, ot' Mounted in an over-hanging arm 5 is which the following description, in eonneedriving shalt i which may be rotated tion with 'the accompanying drawings, is a 'through any suitable clutch mechanism specilieation, like reference characters on (not shown). This arm carries a snipping the drawings indicating like parts in the linil'e lOl, a presser-foot 92, and a 'feeding several gures. .foot 24. The feeding foot is carried by a This invention relates to folding machines rod 36 mounted in a sleeve 3S `the stein of and is herein illustrated as embodied in a Wllioli is pivotally held in a slide i8, said machine for folding the margin of a closed Slldo being Connected by a linli'. 5:2 with a Vall-,ll bell-crank spacingl lever il movement olf ln folding the margin of a closed vamp 'which about the shaft 115 raises or lowers 'the most dillicult portion encountered is the ille Slide 1S and lthereby die pivot about throat at which locality Stretching 0l' 'the 'which the ioot :l oscillates. rif'lie e'temli folded 6tlg@ is liable l0 Occur, Particularly ll' ol the feeding loot 2l is oseillated and also the ihroat is a narrow one. Hitherto nia.- lllSGll mld lowe'ed by ll Cm (H05 Shown) chinos for performing such work have been Q11 ille Shell l Wloll vl'ollltoS/ iu a .Cd/1ut provided with a work-Supporting arm pro- OllOWGl' Cllliod ab lie upper end ol: the jecting horizontally from the frame of the Steun The YSiem 96 o1 the presser-foot 92 is machine and constructed to permit the vamp I'G'll'OCltell by il Second @um 011 lll@ Shell to be suspended -lrom the outer end thereoi. l which engages a second cani-follower 9S Although such machines have been operated on lill@ Upper @Hd 0f the Stem 9(5- Tlllll-G successfully a dillieulty has arisen by reason 10-1 1S 110111121115 inoperative but may be 0l m0 Conflicjng requirenwnt The Crossrendered operative at any time by moving sectional area ol' the arm must be as small lll@ IOd 112 l0 lie left and thereby moving a as possible to accommodate vamps having llOOl-Slpd FIGC@ 108 bGWeGH a Shoulder narrow throats and at the same time the 011 lll@ CHmOllOWG and il Pill 109e Suid arm must be as rigid as possible so as to llQOli'SlllPl P1909 100mg suitably @Olmcclll support the vamp firmly during the folding 'llll lll@ llll'O lilik Sli connected at and fold-pressing opeation5 one end to a treadle-controlled bell-crank According t() the Pi'esgnt invention the lGVCl CUIlllQCtGtl ill? 'ille Utlll Ollll lll lll vamp is supported upon the upper end olf 3, to an arm ast to the farther end of the substantially upright post of small eross- Slll 115, the rod 112 being yieldingly consection. With this construction the cross-V IlGCCd Wlll Silifl lllu- Sib'lwml 21PM llli Sectional area. 0f the post, may be, Blade lSll() tile IICMCI' @11d 0f ille Sllll 115 iS smaller than is the case with the horizontal plovldod Willi a locking pin, the head of arm without lessening to the same extent Y 'llCll iS Sllowll at 118; and this pin may be ii rigidity with which il', Supports the 10pk (.lUSLILl l() (lll'itl lilly 011 Of tt llllllliJQl 0f llOlCS An upright post also possesses the further 119 OI'lIlOd .111 au enlargement on lio level' dvmlmg that the wmp t the time 0f the 54, or the pin may be locked 1n inoperative folding 0f the throat is less liable t0 be position. lVhen the arm 11G is locked to the stretched 1 lever 54, a downward pull on the treadle rod These and other features of the invention, will simultaneously throw in the knife and including certain details ol' construction and decrease the extent of Idie intermittent feeds combiinitions of parts will be described as caused by the moven'ients of J(he 'feed foot 24. embodied in an illustrati ve machine and ,'When the arm 116 is not locked to the lover pointed out in the appended claims. 54, a downward pull on the rod (38 will Referring now to the accompanying drawthrow 1u the knite without allecring the exings2- tout of the intermittent iced movements.

Figure l is an elevation of a machine in lllountedonan uprightpost 201 and adapted to coperate with the feeding foot 24 is an oscillating block 26 the upper edge of which passes through a slot in a plate 8 mounted on the top of the post. This block is angularly movable about the axis of the screw 27 and is normally held in rearward position with reference to the feed movement of the Work. by a spring (not shown) but swings forwardly with the feeding foot and the stock during each intermittent forward movement of said foot. An anvil 20, mounted on the plate 8, supports the work during the pressing of the fold; and a gage 12 and plow 40 also mounted on the plate 8, serve respectively to guide the work by -engagement with. its edge and to form the fold.

The construction which has been thus briedy outlined, with the exception of the post 201, is or may be the same as that shown and described in application Serial No. 524:5 filed in my name and will not be described further in detail.

ln the machine of the prior application the plate 8 and its associated members are carried at the end of an arm which projects horizontally from the frame of the machine. In the present machine they are mounted, as has been stated, upon the top of an upright post 201, In the illustrative machine this post is integral with the frame of the machine and extends upwardly from the base thereof, there being on all sides of it a free and unobstructed space to facilitate the handling of a closed vamp. This post, as well as theframe, of the machine, is hollow; and extending down through the post is a link 203 upon the upper end of which is carried a fold-presser 205 which cooperates with the inclined anvil 20 in pressing the fold. At its lower end the link 203 is pivoted to one end of a rocker arm 207, said rockerarm being pivoted at 209 to the frame of the machine and at its other end at 211 to the lower end of a rod 213. An eccentric strap 215 on the upper 'end of the rod encircles an eccentric (not shown) on the shaft 4. In order to guide the movement ofthe fold-presser 205 a short link 217 is pivotally connected at one end to the link 203 and at the other to a lug on the post 201 as shown. With this construction, rotation of the shaft 4 will cause the fold-presser to be vibrated in the desired manner.

The operation of the machine is as follows:

The presser-foot is raised by manipulating a finger-lever 102, and the lnner margin of the vamp (usually at some locality near the rear end of the vamp) placed against the gage 12, the vamp being thus suspended on the top of the post 201 with the greater portion of the vamp hanging down below the level of said top. Power is then applied to the shaft 4, the vamp being fed intermittently by the action of the feeding foot neiaaes 24C and presser-foot 92 to the plow and fold-presser in the usual manner. The inner margin of the closed vamp is thus operated upon until the starting point has been reached again and the entire margin has been folded. During the folding of the throat it is usually desirable to throw in the snipping knife and decrease the rate of feed, both of which may be accomplished by operating a treadle (not shown) which is attached to the treadle-rod 68. As has been explained, the throat of the vamp presents the greatest' ditliculty owing to the liability of the edge to be stretched at this locality'. By reference to Fig. 2 it will be seen that with the present construction, when the throat is being folded the vamp may be swung, as indicated by the arrow, in' a curved path about the axis of the post or about an axis parallel to that of the post, and that this swinging movement by reason of the post construction and the free space about the post, may take place substantially without interference so that the curve of the throat of the vamp is not distorted dun ing the folding thereof.

Although the invention has been set forth as embodied in a particular machine, it should be understood that the invention is not limited in the sco e of its application to the particular maciiine which has been shown and described.

Having thus described my invention, what l claim as new and desire to secure by Letters Patent is:

1. A folding machine, having in combination` a post of small cross-section provided. with a work-supporting surface on the top thereof, there being a free and unobstructed space around said post, means for feeding a. piece of work over said surface, means for forming a fold in the margin of the work, and means for pressing the fold.

2. A folding machine, having in combination, a post of small cross-section provided with a worlosupporting surface on the top thereof, there being a free and unobstructed lspace around said post, a stationary member extending into proximity to the support, and mechanism for feeding the work, foldintr the margin thereof and pressing the fold, said mechanism being mounted upon the adjacent ends of said member and post,

3. A folding machine,.having in combination, a post of small cross-section provided with a work-supporting surface on the top thereof, there being a free and unobstructed space around said post, an arm overhanging the post, and mechanisms for feeding the work, folding the margin thereof and pressing the fold, said mechanisms being mountedvupon the adjacent parts of the post and arm.

4. A foldinon machine, havingl in combination, a post of small cross-section provided with a Work-supporting surface on the top thereof, there being a free and unobstructed space around said post, an arm overhanging the post, and mechanisms for feeding the Work, folding the margin thereof and pressing the foldS said mechanisms being mounted upon the adjacent parts of the post and arm and including a fold presser mounted on the post. n

5. A. folding machine, having in combina.- tion, a post of small cross-seetion provided with a workssupporting surface on the top thereof., an overhanging arm, and feedinv"` folding and fold-pressing elements mounted on the adjacent ends of said post and arm l5 including a fold-presser, and means mounted on the postfor vibrating said fold-presser.

(3. A folding machine, having in combination, a post of small cross-section provided with a wOrk-supporting surface on the top thereof, an overhanging arm, feeding and folding elements mounted on the adjacent ends of said post and arm, a f0ld-presser, and mechanism extending through the post for vibrating the fold-presser.

In testimonjv whereof I have signed my name to this specification.

PIERLEY R. GLASS. 

